一级外国黄色视频,免费淫秽视频黄片国产,亚洲一区二区三区黄片,高清国产一区二区在线观看,欧美一级高清黄色录像

Features and functions
Broad spectrum bactericide;
No formaldehyde release carrier and low irritation;
Low dosage and high-efficiency;
Compatible with positive ion, negative ion and non-ionic surface active agent;
Recommended dosage: 0.05%~0.2%